I have a few guns that are unique to me. One in the S&W US Navy .38 pistol that my dad carried during the war. He told me a story about running through a battleship with the "Japs" overhead, causing him to bust the grips on his handgun as they snagged on a bulkhead. Once the threat was over, he went into the ship machine shop and fabricated custom handgrips so he could continue carrying this same handgun until he was discharged.
Another gun that means a lot to me was my Colt Python I still have the ~$300 receipt for when I purchased the gun, and used it for a year on duty as a reserve officer until I was hired full time and provided me a department issued S&W Model # 66.